Question

find the value of k for which the system of equation 3 X + 2 Y =
- 5 and x - k y = 2 has a unique solution

Answer 1

unique solution means the two lines intersect at one point that is A1 / A2 is not equal to B1 / B2.
3 divided by 1 is not equal to 2 divided by minus k
then K is not equal to minus 2 / 3.